Blue Coat ProxyClient before 3.3.3.3 and 3.4.x before 3.4.4.10 and Unified Agent before 4.1.3.151952 does not properly validate certain certificates, which allows man-in-the-middle attackers to spoof ProxySG Client Managers, and consequently modify configurations and execute arbitrary software updates, via a crafted certificate.
Conclusion & alert: CVE-2015-1454 is rated Moderate Risk (45.7/100): CVSS High severity, with low exploitation likelihood (EPSS 0.70%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.21% | 0.70% | +0.49% |
| 2 | 2025-03-30 | 0.33% | 0.21% | -0.12% |
| 3 | 2025-03-29 | — | 0.33% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.1 | 2.0 | HIGH |
|
8.6 | 6.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| bluecoat | proxyclient | >= 3.3, < 3.3.3.3 | cpe:2.3:a:bluecoat:proxyclient:*:*:*:*:*:*:*:* |
| bluecoat | proxyclient | >= 3.4, < 3.4.4.10 | cpe:2.3:a:bluecoat:proxyclient:*:*:*:*:*:*:*:* |
| bluecoat | unified_agent | <= 4.1.3 | cpe:2.3:a:bluecoat:unified_agent:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://secunia.com/advisories/62617 | Third Party Advisory |
| https://bto.bluecoat.com/security-advisory/sa89 | Vendor Advisory |